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Hercynite and Riebeckite Physical Properties


Riebeckite and Hercynite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.39   
3.28-3.44   

Fracture
ConchoidalGemdat.org, Uneven   
Uneven, Splintery, Brittle   

Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct   
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}   

Mohs Hardness
7.5-8   
5.0-6.0   

Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)   
Not Available   

Optical Properties >>
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Hercynite and Riebeckite Chemical Formula

While comparing Hercynite and Riebeckite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Hercynite and Riebeckite chemical formula.

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Hercynite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.

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